Exerciser



FIG. 1 is a top, front, right side perspective view of an exerciseraccording to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof; the right side being amirror image; and,

FIG. 6 is a bottom end view thereof.

The ornamental design for an exerciser, as shown and described.